巻号一覧
15 巻, 1 号
選択された号の論文の9件中1～9を表示しています
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発動機負荷の変動による機体振動状況の変化に就いて (負荷振動実験)竹内 龍三1954 年 15 巻 1 号 p. 1-7
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーAs the agricultural engine is used to work many different load of working machine, I have studied and tested how load is the optimum works on problem of engine vibration-proof.
As first in experimental formura of load test, connect at amplitude and brake horse power. And this formula is comprehended the amplitude of spontaneous measuring points of engine body and foundamental frame. Next, I was doing the theoretical study of load, as a cause of curve. But practically must be calculated a belting under the load to added engine shaking force.
Still more study by combustion state at engine cylinder. It's owing to happen abnormal combustion in cylinder, that cause at small torque, irregular change of atomization of light oil fuel, imprefection at growth of combustion zone. Especially, as comparison of mean effective press, high load is constant press type, hence 1/4 load and it's vicinity are minimum amplitude because it was setting between constant volume type and constant pressure type.
From the stand-point of vibration, as in conclusion, if the forced vibration, which included the natural vibration of engine and frame, is worked under one load depend on force of brake friction, vibration is go away from resonance, so that the minimum compound amplitude at 1/4 load. From stand-point of economical drive, 1/4 load is must effective used at vibration but the this point is drop the fuel consumption and mechanical efficiency, therefore I hope that we must used at about 3/4 load and it's vicinity抄録全体を表示PDF形式でダウンロード (1165K) -
リング周りの条件と漏洩特性について中馬 豊1954 年 15 巻 1 号 p. 8-12
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーGas Leakage in the cylinder of the internal combustion engine is one of the conspicuous causes of declining properties of the lubricant oil.
Hence, the author investigated about the general characteristics of gas leakage in the cylinder under the fundamental moving condition.
The revolts obtained may be summarized as follows;
i) The type of gas leakage in the cylinder can be classified into the fluctuating stage and the undulating stage.
ii) Existence of these stages can be explained from temperature rising and volume expanding of piston, cylinder wall, and lubricant oil methodically, during the initial moving hours of the engine.
iii) Feature of this diagram, indicated the amount of gas leakage on the occasion of “Hot starting” and “Cold starting” respectively, differs at the fluctuating stage only.
iv) Crossed set at 180 degrees of ring gap in the cylinder is profitable from the point of view of diminishing gas leakage.
v) From this experiment, it was made sure that the arrangement and the circulation of ring gap in the cylinder influences much on the amount of gas leakage.
Accordingly, the direction and the speed of circulation of ring in the cylinder were examined to the fairly distinct result.抄録全体を表示PDF形式でダウンロード (822K) -
磯部 満武, 磯部 昭一1954 年 15 巻 1 号 p. 13-15
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーThe wear phenomenon of carbon steel, which previously heat treated, that is, normarized, annealed, oil quenched, water quenched and tempered, was studied by using 24-48 mesh Hirose River sand as a soil. In the case of the humidity and granulation of soil, and running velocity of specimen are constant, the amount of wear is increase almost linearly with running distance regardless of tee hardness, heat treatment and the amount of carbon in steel. The amount of wear is rapidly decrease with increasing amount of carbon content but the rate of decrease is little at above 0.7 per cent of carbon. The amount of wear is rapidly increase with elevation of tempering temperature and decrease with hardness.抄録全体を表示PDF形式でダウンロード (550K) -
1954 年 15 巻 1 号 p. 15-15,28
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (374K) -
耕耘・進行分離試驗土屋 功位, 小松 幸雄1954 年 15 巻 1 号 p. 16-20
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (787K) -
森 周六, 小島 和雄1954 年 15 巻 1 号 p. 21-24
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーIn order to reveal the effect of growth control of wheat, we have reseached the wheat-repressing by the roller at the farm of the Kyushu University.
Experimental items are zero, one, three snd five times repression by the flat roller (28kg and 13kg), culti-packer (13kg), and eight square type roller (13kg) and also human power repression (common method).
According to result of field experiment, we found that the degree of shortening of the wheat lengh and increase of the stalk number, when used the repressing-roller, is larger than human power repression.
As regards the roller for wheat-repressing, on time repression by the flat roller (20-25kg) or two-three times repression by the culti-packer (13-15kg) is better than the others.抄録全体を表示PDF形式でダウンロード (664K) -
田中 孝1954 年 15 巻 1 号 p. 25-28
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーIn this paper, I had not so many experiences to find the firm results, but the tendency was found as follows.
That is, the jet discharge from the nozzle of the motor sprayer used various type mechanics was irregular even when the same nozzle was used and the mean pressure worked upon the fluid was same.
In theoreticaly, the jet discharge was the function of the pressure and approached velocity of the fluid, but in addition to above it was found that it was affected by the pressure wave, the figure and the point of the peak value of the ripple current caused by the crank mechanics, in this experience.
θ max, the point of peak value, became the smaller, the discharge more increased. The capacity of the air chamber had directly no concern with the discharge, but it was thought that the capacity had an effect on the figure of the ripple.抄録全体を表示PDF形式でダウンロード (664K) -
三好 保男1954 年 15 巻 1 号 p. 29-32
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (649K) -
小林 潤1954 年 15 巻 1 号 p. 33-35
発行日: 1954/03/15
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (538K)
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